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正交频分技术最主要缺点之一就是传输信号的高峰均值功率比,部分传输序列法是解决高峰均值功率比的最有效方法之一。虽然最优部分传输序列方法性能很好,但其计算复杂度非常大,搜索复杂度随着子块数指数增加,这样降低搜索复杂度显得尤为重要。本文改进了OPTS搜索过程中计算时域矢量的计算方法,使其计算复杂度大大降低,但系统性能不受影响。
Orthogonal frequency division technology is one of the most important shortcomings of the peak signal transmission power mean ratio, part of the transmission sequence method is to solve the peak average power ratio of the most effective way. Although the best part of the transmission sequence method performs well, its computational complexity is very high. As the search complexity increases exponentially with the number of sub-blocks, it is particularly important to reduce the search complexity. This paper improves the computing method of computing time-domain vectors in the OPTS search process, which greatly reduces the computational complexity, but the system performance is not affected.